Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!mcsun!ukc!reading!minster!alistair
From: alistair@minster.york.ac.uk
Newsgroups: comp.sys.mac
Subject: Re: Help! Anyone know how to force the mouse to a location?
Message-ID: <644764405.19484@minster.york.ac.uk>
Date: 7 Jun 90 13:13:25 GMT
References: <1990Jun5.091419.14219@portia.Stanford.EDU> <16995@phoenix.Princeton.EDU>
Reply-To: alistair@SoftEng.UUCP (alistair)
Organization: Department of Computer Science, University of York, England
Lines: 51

In article <16995@phoenix.Princeton.EDU> bskendig@phoenix.Princeton.EDU (Brian Kendig) writes:
>In article <1990Jun5.091419.14219@portia.Stanford.EDU> canuck@portia.Stanford.EDU (William Stocker) writes:
>>I'm writing a Mac program in THINK Pascal 3.0, and need to force the
>>mouse to a particular screen location.  I'm sure it's against Apple's
>>guidelines (there's no SetMouse command I can find in Inside Mac I-V),
>>but there's a good purpose for it -- trust me!

I'm sure you have a good reason - so here is some code to do it.
It's not original - I adapted it from some source someone else
previously posted on the net


procedure SetCursor (where: point);
  const
    { some dangerous low-memory-global equates }
    MBState = $172;		{ byte }
    MTemp = $828;   		{ Low Level interrupt mouse location (point) }
    RawMouse = $82c;		{ unprocessed mouse location (point) }
    Mouse = $830;   		{ processed mouse location (point) }
    CrsrNew = $8ce;		{ set <> 0 if mouse has moved (byte) }
    CrsrCouple = $8cf;		{ set = 0 if cursor not allowed to move (byte) }
    Couple = $ff;    		{ value for CrsrCouple }
    Uncouple = $00;		{ value for CrsrCouple }
		
  var
    LowGlob: integer;
    LowMem: ptr;
    PointPtr: ^point;
    finalTicks: longint;
		
  begin
    LocalToGlobal(where);    		{ Get ready to restore old mouse position }
    LowMem := pointer(RawMouse);	{ point to low memory }
    PointPtr := @LowMem^;    		{ treat it as a point }
    PointPtr^ := where;    		{ store saved mouse position into it }
    LowMem := pointer(MTemp);		{ point to low memory }
    PointPtr := @LowMem^;    		{ treat it as a point }
    PointPtr^ := where;    		{ store saved mouse position into it }
    LowMem := pointer(CrsrNew);
    LowMem^ := $ffff;    		{ both CrsrNew & CrsrCouple }
    Delay(5, finalTicks)   		{ let the cursor catch up }
  end;	{ SetCursor }

------------------------------------------------------------------
Alistair Edwards
University of York, York, England YO1 5DD

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